diff --git a/docs/changes/1.x/1.5.0.md b/docs/changes/1.x/1.5.0.md
index b96865bada..a3f1b074fa 100644
--- a/docs/changes/1.x/1.5.0.md
+++ b/docs/changes/1.x/1.5.0.md
@@ -7,6 +7,7 @@
 ### Bug fixes
 
 - Set writeAttribute return type by [@radarhere](https://github.com/radarhere) fixing [#2204](https://github.com/PHPOffice/PHPWord/issues/2204) in [#2776](https://github.com/PHPOffice/PHPWord/pull/2776)
+- Writer RTF: Support for various underline styles, doublestrikethrough, smallcaps, allcaps, fgcolor, hidden, scale, spacing, kerning, position, noproof, and bgcolor in Font by [@rasamassen](https://github.com/rasamassen) in [#2819](https://github.com/PHPOffice/PHPWord/pull/2819)
 
 ### Miscellaneous
 
@@ -16,4 +17,4 @@
 
 ### BC Breaks
 
-### Notes
\ No newline at end of file
+### Notes
diff --git a/src/PhpWord/Writer/RTF/Element/AbstractElement.php b/src/PhpWord/Writer/RTF/Element/AbstractElement.php
index e007e6aa26..cb5ecba009 100644
--- a/src/PhpWord/Writer/RTF/Element/AbstractElement.php
+++ b/src/PhpWord/Writer/RTF/Element/AbstractElement.php
@@ -200,6 +200,18 @@ protected function writeFontStyle()
                 $styleWriter->setColorIndex($colorIndex + 1);
             }
         }
+        if ($this->fontStyle->getFgColor() != null) {
+            $colorIndex = array_search($this->fontStyle->getFgColor(), $parentWriter->getColorTable());
+            if ($colorIndex !== false) {
+                $styleWriter->setFgColorIndex($colorIndex + 1);
+            }
+        }
+        if ($this->fontStyle->getBgColor() != null) {
+            $colorIndex = array_search($this->fontStyle->getBgColor(), $parentWriter->getColorTable());
+            if ($colorIndex !== false) {
+                $styleWriter->setBgColorIndex($colorIndex + 1);
+            }
+        }
         if ($this->fontStyle->getName() != null) {
             $fontIndex = array_search($this->fontStyle->getName(), $parentWriter->getFontTable());
             if ($fontIndex !== false) {
diff --git a/src/PhpWord/Writer/RTF/Style/Font.php b/src/PhpWord/Writer/RTF/Style/Font.php
index f343c0502f..b2bbff2716 100644
--- a/src/PhpWord/Writer/RTF/Style/Font.php
+++ b/src/PhpWord/Writer/RTF/Style/Font.php
@@ -37,6 +37,16 @@ class Font extends AbstractStyle
      */
     private $colorIndex = 0;
 
+    /**
+     * @var int Font foreground color index
+     */
+    private $fgColorIndex = 0;
+
+    /**
+     * @var int Font background color index
+     */
+    private $bgColorIndex = 0;
+
     /**
      * Write style.
      *
@@ -50,19 +60,67 @@ public function write()
         }
 
         $content = '';
-        $content .= $this->getValueIf($style->isRTL(), '\rtlch');
-        $content .= '\cf' . $this->colorIndex;
-        $content .= '\f' . $this->nameIndex;
 
-        $size = $style->getSize();
-        $content .= $this->getValueIf(is_numeric($size), '\fs' . round($size * 2));
+        // To make it easy to determine what's missing as new features are added,
+        // Everything below is in the same order as array found in PhpOffice\PhpWord\Style\Font\getStyleValues
+
+        // Basic
+        $content .= $this->getValueIf($style->getName() !== null, '\f' . $this->nameIndex);
+        $content .= $this->getValueIf($style->getSize() !== null, '\fs' . round($style->getSize() * 2));
+        $content .= $this->getValueIf($style->getColor() !== null, '\cf' . $this->colorIndex);
 
+        // Underline Keywords
+        $underlines = [
+            \PhpOffice\PhpWord\Style\Font::UNDERLINE_DASH => '\uldash',
+            \PhpOffice\PhpWord\Style\Font::UNDERLINE_DASHHEAVY => '\ulth',
+            \PhpOffice\PhpWord\Style\Font::UNDERLINE_DASHLONG => '\ulldash',
+            \PhpOffice\PhpWord\Style\Font::UNDERLINE_DASHLONGHEAVY => '\ulthldash',
+            \PhpOffice\PhpWord\Style\Font::UNDERLINE_DOUBLE => '\uldb',
+            \PhpOffice\PhpWord\Style\Font::UNDERLINE_DOTDASH => '\uldashd',
+            \PhpOffice\PhpWord\Style\Font::UNDERLINE_DOTDASHHEAVY => '\ulthdashd',
+            \PhpOffice\PhpWord\Style\Font::UNDERLINE_DOTDOTDASH => '\uldashdd',
+            \PhpOffice\PhpWord\Style\Font::UNDERLINE_DOTDOTDASHHEAVY => '\ulthdashdd',
+            \PhpOffice\PhpWord\Style\Font::UNDERLINE_DOTTED => '\uld',
+            \PhpOffice\PhpWord\Style\Font::UNDERLINE_DOTTEDHEAVY => '\ulthd',
+            \PhpOffice\PhpWord\Style\Font::UNDERLINE_HEAVY => '\ulth',
+            \PhpOffice\PhpWord\Style\Font::UNDERLINE_SINGLE => '\ul',
+            \PhpOffice\PhpWord\Style\Font::UNDERLINE_WAVY => '\ulwave',
+            \PhpOffice\PhpWord\Style\Font::UNDERLINE_WAVYDOUBLE => '\ululdbwave',
+            \PhpOffice\PhpWord\Style\Font::UNDERLINE_WAVYHEAVY => '\ulhwave',
+            \PhpOffice\PhpWord\Style\Font::UNDERLINE_WORDS => '\ulw',
+        ];
+
+        // Style
         $content .= $this->getValueIf($style->isBold(), '\b');
         $content .= $this->getValueIf($style->isItalic(), '\i');
-        $content .= $this->getValueIf($style->getUnderline() != FontStyle::UNDERLINE_NONE, '\ul');
+        if (isset($underlines[$style->getUnderline()])) {
+            $content .= $underlines[$style->getUnderline()];
+        }
         $content .= $this->getValueIf($style->isStrikethrough(), '\strike');
+        $content .= $this->getValueIf($style->isDoubleStrikethrough(), '\striked1');
         $content .= $this->getValueIf($style->isSuperScript(), '\super');
         $content .= $this->getValueIf($style->isSubScript(), '\sub');
+        $content .= $this->getValueIf($style->isSmallCaps(), '\scaps');
+        $content .= $this->getValueIf($style->isAllCaps(), '\caps');
+        $content .= $this->getValueIf($style->getFgColor() !== null, '\highlight' . $this->fgColorIndex);
+        $content .= $this->getValueIf($style->isHidden(), '\v');
+
+        // Spacing
+        $content .= $this->getValueIf($style->getScale() !== null, '\charscalex' . $style->getScale());
+        $content .= $this->getValueIf($style->getSpacing() !== null, '\expnd' . $style->getSpacing());
+        $content .= $this->getValueIf($style->getKerning() !== null, '\kerning' . $style->getKerning() * 2);
+        $content .= $this->getValueIf($style->getPosition() !== null, '\up' . $style->getPosition());
+
+        // General
+        $content .= $this->getValueIf($style->isRTL(), '\rtlch');
+
+        // Other (Font settings currently not in included in array)
+        $content .= $this->getValueIf($style->isNoProof(), '\noproof');
+        $content .= $this->getValueIf($style->getBgColor() !== null, '\cb' . $this->bgColorIndex);
+
+        if (empty($content)) {
+            return $content;
+        }
 
         return $content . ' ';
     }
@@ -86,4 +144,24 @@ public function setColorIndex($value = 0): void
     {
         $this->colorIndex = $value;
     }
+
+    /**
+     * Set font foreground color index.
+     *
+     * @param int $value
+     */
+    public function setFgColorIndex($value = 0): void
+    {
+        $this->fgColorIndex = $value;
+    }
+
+    /**
+     * Set font background color index.
+     *
+     * @param int $value
+     */
+    public function setBgColorIndex($value = 0): void
+    {
+        $this->bgColorIndex = $value;
+    }
 }