Flash and Sound Signal M74Pistol Rocket Signals Mk 1 Mod 2 and Mk 2 Mod 1
U.S. EXPLOSIVE ORDNANCE
PART 3 - PYROTECHNICS
Chapter 9 - GROUND PYROTECHNICS
Section 1 - SIGNALS

Smoke Signals M62, M64, M65, and M66

Length, inches

10.15

Diameter, inches

1.88

Bursting altitude, feet

600

Colors - M62

Red

M64

Yellow

M65

Green

M66

Violet

Use: These signals are employed by artillery observers to signal or lay in a line of fire.

Description and operation: The signal is launched in the same manner as the M17A1 series. The fuze delay ignites an expelling charge, which expels and ignites the six smoke pellets at an altitude of 600 feet. The pellets burn and fall, leaving a colored smoke trail.

Figure 200. Smoke Signals M62, M64, M65, and M66

Flash and Sound Signal M74Pistol Rocket Signals Mk 1 Mod 2 and Mk 2 Mod 1