Peaceful Penetration- A tactic made by John Monash who was part of the Australian Imperial Force which was successfully used multiple times in No Man's Land. The strategy said for tanks, artillery, machine guns, and planes to fire on one point. Infantry would soon occupy the certain area when the bombardment was done. For the plan to work, each unit had to co-operate with each other for the plan to work.
Creeping Barrage- When advancing to enemy trenches, artillery would always bombard the area, then infantry would move forward. The creeping barrage had artillery fire in stages, then have infantry move forward. If the timing of the artillery was off, it could mean the death of ally infantry. The tactic was successful, but it didn't bring mobility back into the war.
Tunneling- During WW1, troops needed a way to counter trench warfare. Specialized miners soon began to dig mines under No Man's Land, and reach the enemy trench, and ignite explosives under the trench, and have infantry move in, hoping the enemy would be confused. But sometimes underground fights would occur if tunnels from both sides would collide, also tunnels could take years to construct. A counter measure made to discover tunneling, was that a water filled oil barrel would be placed into the floor of the trench, and soldiers would take turns placing an ear on the drum, and listen for any noise from an enemy miner(s).