page_title: Chemical warfare
hierarchical_section_title: Chemical warfare
caption_attribution_description: English: A chemical agent protective suit and a protection mask worn by a Swedish Army soldier. Español: Traje de protección contra agentes químicos y máscara de protección, portado por un soldado del ejército sueco.
context_page_description: Chemical warfare means using chemical compounds in war to injure or kill people. The chemicals used for chemical warfare are poisonous.
  Chemical warfare has been used since the Stone Age. Since 1899, several international laws have said that using chemical weapons is illegal. But chemical weapons have still been used in wars since then.
context_section_description: Chemical warfare means using chemical compounds in war to injure or kill people. The chemicals used for chemical warfare are poisonous. 
  Chemical warfare has been used since the Stone Age.  Since 1899, several international laws have said that using chemical weapons is illegal. But chemical weapons have still been used in wars since then.
caption: A Swedish Army soldier wearing a chemical agent protective suit (C-vätskeskydd) and protection mask (skyddsmask 90)
exif: {"Image Make": "Canon", "Image Model": "Canon DIGITAL IXUS 400", "Image Orientation": "Horizontal (normal)", "Image XResolution": "180", "Image YResolution": "180", "Image ResolutionUnit": "Pixels/Inch", "Image DateTime": "2003:09:09 14:53:08", "Image YCbCrPositioning": "Centered", "Image ExifOffset": "196", "Thumbnail Compression": "JPEG (old-style)", "Thumbnail XResolution": "180", "Thumbnail YResolution": "180", "Thumbnail ResolutionUnit": "Pixels/Inch", "Thumbnail JPEGInterchangeFormat": "1510", "Thumbnail JPEGInterchangeFormatLength": "5895", "EXIF ExposureTime": "1/400", "EXIF FNumber": "49/10", "EXIF ExifVersion": "0220", "EXIF DateTimeOriginal": "2003:09:09 14:53:08", "EXIF DateTimeDigitized": "2003:09:09 14:53:08", "EXIF ComponentsConfiguration": "YCbCr", "EXIF ShutterSpeedValue": "277/32", "EXIF ApertureValue": "147/32", "EXIF ExposureBiasValue": "0", "EXIF Flash": "Flash did not fire, auto mode", "EXIF FocalLength": "711/32", "EXIF FlashPixVersion": "0100", "EXIF ColorSpace": "sRGB", "EXIF ExifImageWidth": "768", "EXIF ExifImageLength": "1024", "Interoperability InteroperabilityIndex": "R98", "Interoperability InteroperabilityVersion": "[48, 49, 48, 48]", "Interoperability RelatedImageWidth": "768", "Interoperability RelatedImageLength": "1024", "EXIF InteroperabilityOffset": "1338", "EXIF FocalPlaneXResolution": "25600/7", "EXIF FocalPlaneYResolution": "25600/7", "EXIF FocalPlaneResolutionUnit": "2", "EXIF CustomRendered": "Normal", "EXIF ExposureMode": "Auto Exposure", "EXIF WhiteBalance": "Auto", "EXIF DigitalZoomRatio": "1", "EXIF SceneCaptureType": "Standard"}