Instructor's Notes: –

This lesson will be taught behind cover. A second man can materially assist and increase the rate of fire by loading grenades for the firer. Such loading should, therefore, be prac-tised in para. 8.

Stores. – Discharger; drill grenade; sight for instructor and each man; filled sand-bags is available; any suitable target.

Notes. – (1) If sights are NOT avaible, approximate elevation can be obtained using the backsight of the rifle, with the leaf vertically raised.

(2) Drill cartridges should be used to represent ballistite ammunition.

(3) Drill grenades or substitute will always be used in paras. 5, 6, and 8 in order that a correct aim may be taken. An improvised 68 drill grenade can be made out of a black of wood, but to the correct size.

Inspect arms, drill cartridges; pouch equipment; extend squad; point out target; fix dis-chargers. Fit sights. Order "Load".

1. Explain:–

The grenade has been introduced with the object of damaging hostile A.F.Vs. It is fired from the discharger, a ballistite cartridge being used. The effective range is from 50 to 75 yds., the sight being designed for use between these distances.

Excellent effect can often be obtained against A.F.Vs. by allowing them to pass through and engaging them in rear, where the armour is thinner.

The grenade can be fired from the hip, if necessary, against houses. Weight 1¾ lb.

Live grenades are issued ready for use, and must on no account be stripped.

Body. – Filled with H.E. and closed at front end by a brass disc held in position by a screw-on ring. It is painted buff.

Tail unit. – Has vanes to keep it steady during flight. It contains a hollow central sleeve, in which is situated a striker and creep spring. The striker is held in position by a safety pin to which a label is attached, and by a shear wire. A gas check is fitted to the base, alternatively the gas check may be integral with the tail unit.

Packing. – Grenades are packed seventeen in a tin box with 20 rounds of ballistite.

Question squad.

Fig. 12

Explain:–

Before firing, the safety pin is withdrawn, and then only the shear wire and creep spring hold the striker in position. On firing, the shear wire is broken by the shock of discharge, and on impact the momentum causes the striker to overcome the creep spring, which fires the detonator.

Question squad.