Mortars suppressing German trenches, they have a short range and can closely coordinate with infantry and tanks.
Under the cover of artillery fire, the tanks slowly advance towards the enemy trenches with infantry.
The tanks are "Mark I" models, their 17MM frontal armor is slightly inadequate, but this is not a major problem; binding a layer of sandbags temporarily before the battle can deal with it.
Barbed wire need not be cleared, the wide tracks of the "Mark I" can easily crush and even carry it away.
But Brownie considered one issue: "The barbs might get caught in the tracks and road wheels. Breaking through the lines is not a problem, but maintenance will be needed immediately after the battle, otherwise it won't last ten kilometers."
Colonel Estiny agreed: "We should spend some time removing the barbed wire; this will save more time for subsequent battles!"
So there was a scene of engineers hooking away the barbed wire before the battle.
