In October 1798 Holloway was selected to be commanding royal engineer and second in command with the local rank of major of a military mission under Brigadier-general George Koehler to assist the Turks in the reorganisation of their army.
In October 1798 Holloway was appointed to be commanding royal engineer and second in command with the local rank of major of a military mission by his colleague from Gibraltar who was now Brigadier-general George Koehler. He had been tasked with to assist the Turks in the reorganisation of their army.