Frank Trickett was considered fit for the Army when he enlisted on 11th September 1915 at Greenfield, Oldham. He was assigned to the 3/7 Duke of Wellington Regiment as Private No. 3301.

At his medical he was described as Height 5'5" Chest expanded 31 ½ "with an expansion range 2". His vision was good and physical development Fair. He received his first inoculation on 21st Sept and second on 4th October 1915. Perhaps it was his height that helped him with his deception because he was only fifteen years of age.

As the war progressed more and more men were needed and Frank was called upon 19th March, 1918. This time he was Private No 86762 of the Manchester Regiment. His discharge occurred on 5th May 1919 but this was not the end of Frank's army career.

Frank re-enlisted on 5th May 1919 with the Cameronians Scottish Rifles. He served as Private 3234936 until his discharge 3years and 92 days later.

It was known in the family that he travelled through India and Afghanistan serving with the Cameronians.

The notice at the side shows that Frank was given permission to be absent from his quarters from 1st August 1921 to 13th September 1921 to proceed to Stevens Home, Mussoorie, which could possibly have been a military hospital or sanatorium, but for what reason we do not know.