NOTE.--In making the interval the flags are crossed downward in front of the body (just above the knees); the double interval is the "chop-chop" signal made twice; the triple interval is "chop-chop" signal made three times. In calling a station face it squarely and make its call. If there is no immediate reply wave the flags over the head to attract attention, making the call at frequent intervals. When the sender makes "end of message" the receiver, if message is understood, extends the flags horizontally and waves them until the sender does the same, when both leave their stations. Care must be taken with hand flags to hold the staffs so as to form a prolongation of the arms. LETTER CODES. INFANTRY. =47.= For use with General Service Code or semaphore hand flags. -----------------+---------------------------+----------------------------- Letter of | If signaled from the | If signaled from the alphabet. | rear to the firing | firing line to the rear. | line. | -----------------+---------------------------+----------------------------- AM | Ammunition going forward. | Ammunition required. CCC | Charge (mandatory at all | Am about to charge if no | times). | instructions to the contrary. CF | Cease firing. | Cease firing. DT | Double time or "rush." | Double time or "rush." F | Commence firing | FB | Fix bayonets. | FL | Artillery fire is causing | | us losses. | G | Move forward. | Preparing to move forward. HHH | Halt. | K | Negative. | Negative. LT | Left. | Left. O | What is the (R. N., etc.)?| What is the (R. N., etc.)? (Ardois and | | semaphore only.) | Interrogatory. | Interrogatory. . . -- -- . . | What is the (R. N., etc.)?| What is the (R. N.. etc.)? (All methods but | Interrogatory. | Interrogatory. ardois and | | semaphore.) | | P | Affirmative. | Affirmative. RN | Range. | Range. RT | Right. | Right. SSS | Support going forward. | Support needed. SUF | Suspend firing. | Suspend firing. T | Target. | Target. -----------------+---------------------------+----------------------------- CAVALRY. =48.= For use with General Service Code or semaphore hand flags.