The successes during trench raids, and kill or capture missions can be seen as early forerunners of special operations.

The four months before the April attack saw the Canadian Corps execute no fewer than 55 separate trench raids.

While continuing to train other units, the Assault Detachment also participated in many small trench raids and attacks with limited objectives.

Charley and Hitler fight hand-to-hand during a trench raid, nearly killing each other.

Two or three letters had come from him, written before the trench raid, and since then there had been only unbroken silence.

These troops were responsible for the construction of defences, sanitation systems, water supplies, bridging, and assisting with trench raids.

Its first combat came on 12 June when the battalion launched a trench raid on the Germans opposite their position.

This was normally used to protect trench raids, although it could also be used offensively against a German unit.

The infantry trained on a replica of the German trench system, built using information from aerial photographs and trench raids.

Sporadic fighting continued, with sniping, grenade attacks and trench raids, which were separated in places by only a few metres.