Introduction:
When the first tanks were actually used in the battle of somme in 1916 the result were not impressive. Although some managed to get trough the first trenches eventually we
re knocket out by artillery or grenades. Beside his relative little effect in strategical matters the fisrt Mark I did manage to bring down the german morale especially for the simple infantrymen for wich sometimes the sight of a squre and large tracked box of steel coming to get him was too much.
The german Army High comman began a serie of propaganda campaign in order to calm down the troops saying that the tank was a complete failure, that it was more dangerous for his crew thaan for the enemy, etc.
A interim measure was the distribution of a new armor piercing ammo for the M1898 rifle began in large scale, that was the S.m.K ( Spitzer mit stahlKern , pointed with steel core)
Squematic of the S.m.K bullet.
The S.m.K bullet had good chances to penetrate the side armor of the british Mark I & II up to 100 meters.
However in 1917 with the introduccion of new and improved allied desigs made this bullet obsolete, the army realized that something better was needed.