The battalion's first actions were at the Battle of Arras (1917) and included the disastrous Bullecourt operation in April 1917. The 3rd Tank Brigade was formed under his command on 27 April 1917 and Hardress-Lloyd remained in charge of this brigade until the war ended.
The battalion's initial endeavors were at the Battle of Arras (1917) and encompassed the calamitous Bullecourt operation in April 1917. The 3rd Tank Brigade was established under his direction on 27 April 1917, and Hardress-Lloyd continued to oversee this brigade until the war concluded.