_Rush._ Same as _double time_. (_C.I.D.R., Nos. 2 and 14._) 44. The signals _platoon_ and _squad_ are intended primarily for communication between the captain and his platoon leaders. The signal _platoon_ or _squad_ indicates that the platoon commander is to cause the signal which follows to be executed by platoon or squad. _Flag Signals._ 45. The signal flags described below are carried by the company musicians in the field. In a regiment in which it is impracticable to make the permanent battalion division alphabetically, the flags of a battalion are as shown; flags are assigned to the companies alphabetically, within their respective battalions, in the order given below. First battalion: Company A. Red field, white square. Company B. Red field, blue square. Company C. Red field, white diagonals. Company D. Red field, blue diagonals. Second battalion: Company E. White field, red square. Company F. White field, blue square. Company G. White field, red diagonals. Company H. White field, blue diagonals. Third battalion: Company I. Blue field, red square. Company K. Blue field, white square. Company L. Blue field, red diagonals. Company M. Blue field, white diagonals. 46. In addition to their use in visual signaling, these flags serve to mark the assembly point of the company when disorganized by combat, and to mark the location of the company in bivouac and elsewhere, when such use is desirable. 47. (1) For communication between the firing line and the reserve or commander in the rear, the subjoined signals (Signal Corps codes) are prescribed and should be memorized. In transmission, their concealment from the enemy's view should be insured. In the absence of signal flags, the headdress or other substitute may be used.