Memorandum, Signals That Must Be Known by the Infantry, from Lieutenant Colonel W. V. Gallagher

SIGNADE THAN MUST KNOWN BY The TREANTRS SIGNALS WATER BY INFANCEY Objective reached Caterpillar rocket Request for barrage fire Rncket with three white stars Friendly light artillery is firing on us V.B. cartridg 1 white star Friendly heavy artillery is firing on us V.B. cartridge 2 white star, followed by green V.B. para- chute cartridge We are going to advance, Increase range Rocket with green stars We are here Bengal flere Message understood One red rocket Repeat signal or message One white rocket SIGNALS MADE BY AEROPLANES Where are you (call for marking out first line - One cartridge of 6 stars Understood One cartridge of 2 stars Anti-tenk gun at this point Yellow smoke cartridge Display P. C. panels One cartridge 2 red stars SIGNALS FOR TANKS (a) One yellow and one blue flag at same time - I am ditched, dig me out. (b) One yellow flag - Broken down engine trouble. If either of above are seen by infantry, send runner and report to supporting tanks. (c) One rod pennant - Plato on Commander's tank, (d) One red and white diagonal pennant - Company Commander's tank. (e) One red and one yellow pennant - Tank signals to each other. On observing the six white stars from the aeroplanes the inf antry will stake out the line by means of their white panels, It is best to display these in groups of three or four and wave them to attract attention, By night or in whoded terrain a white Bengal flere takes the place of the panel. The aeroplane will then fire a rocket of two white stars meaning "understoud"; panels are then removed. The cartridge of two red stars from the aeroplane calls for the dis- play of the panel of the P.C. Divisional Center for the receipt of visual signals is at M AMELON - BLANC, 600 meters Southeast of VAUQUOIE. By command of Major General Traub : W. V. GALLAGHER Cepies to: Regimental, Battalion, Company, Lieutenant Colonel, G.S. G-3 and Platoon Commanders. NATIONAL ARCHIVES AND REGORDS and