Soap Screen

This is my only idea to date for a "weapon" (sounds of applause)

Picture the scene - your unit is cut off and about to be overrun... escaping under the protection of a smoke screen is not a effective option due to a combination of circumstances, so you decide to deploy your Soap Screen. A series of large overfilled washing machines, which you had previously seeded in a defensive line, erupt into virulent life. Gallons of colourful soap suds billow out, filling every alley-way and gully. You make good your escape as your enemy is enveloped in a monstrous cloud of soap suds.

Soapy bubbles have several advantages over the traditional smoke screen

1 Inside the bubble Screen visibility is reduced to about an inch.

2 Soap Screen would leave everything nice and clean and shiny in its aftermath.

3 Enemy soldiers who foolishly ventured into the Screen would become instantly lost and flounder around until they bumped into something like a wall or fell down a hole.

4 Because cleanliness is next to Godliness many enemy soldiers would simply strip off and start washing themselves in the luxurious suds, while you completed your withdrawal.