green army noun2 •(UK, slang) The regular army, not including any special forces.'We'll get the green army to keep an eye on the place, make sure there's not too much activity while our backs are turned,' said the ops officer. — 1998 •(historical) Name of some armed groups that were not affiliated with the Reds or the Whites, for ideological or other reasons, existing from 1918 approximately until the end of 1924. This name may sometimes include some Anarchist and Nationalist groups, as well as deserters and criminals. formsgreen armies
