His publishing career was interrupted however, when the Surrey militia was again called into service between 1778 and 1783. This was not a happy experience for him. Where previously Grose had been able to spend his summers visiting and sketching ancient sites, he was now obliged to attend his regiment in various training camps. He did not get on well with his new commanding officer, and he handled regimental finances in a slipshod manner. The result was that he incurred debts towards fellow officers that would take years to straighten out. The financial pressure forced him to increase both the rate and the range of his publications.