It was with the help of these connections that Wilmot probably became an army officer, serving in places such as Gibraltar in 1745.
Army officer
It was Wilmot's regiment in Gibraltar that was ordered to travel to Louisbourg, to relieve the garrison of Louisbourg, which had been surrendered by the French in 1745.
In 1749, Louisbourg having been handed back to the French, the British troops sailed down to Halifax, Nova Scotia, to come under the command of Governor Edward Cornwallis. While it is apparent that many of the troops of Gibraltar left Nova Scotia soon after, Wilmot stayed in Nova Scotia, having achieved the rank of major.
Only one year later, in May 1764, Wilmot was appointed governor of Nova Scotia following the resignation of Henry Ellis. It was not a grand time for such an appointment. One example of the province's problems at the time was that Nova Scotia was suffering from great debts and deficits.
By the time of his appointment, Wilmot's health was already deteriorating, he having blamed the climate for his sickness. In fact, he had sent an application to ask for a return to the England, but never received a reply.
Governor Wilmot died in 1766 after suffering from a reportedly bad winter. An elaborate funeral service was held for him in Halifax. He is buried in the crypt of St. Paul's Church (Halifax)).