1. Artillery fire over towards the enemy trenches, bombarding their lines
2. Artillery stopped and men went 'over the top' and advanced towards the enemy lines
3. Enemy soldiers took up defensive positions and opened fire with machine guns, many attackers cut down before reaching the enemy lines
4. 4a. Attackers took the enemy trench and then had to try and hold it, which often proved impossible
5. 4b. Attackers fell back to their original trench and often had to then defend their own trenches against a counter-attack