I cannot find a RIC record for anything like him
ADRIC No 588
A likely man is Royal Irish Fus.. Temp. Lt. D. F. McClean, from 13th Transpt. Workers Battalion., Bedf. & Herts. R., to be temp. Lt., 3 Sept. 1919, with seniority 1 Mar. 1919. This CV follows this man
1891 Feb 28 Born Arlington, New Jersey, USA
1894 Jul 18. Aged 3. Arrives back in Liverpool from Boston on S S Catalonia with father C W McClean (b. circa 1848) No mother on manifest. Father is a plasterer.2nd Class.
1901 census Living with grandparents at 5 Martinez Avenue, Pottinger, Down
1911 census. Living with uncle at Ballyhenry, Carnmoney, Antrim
1916 Mar 9. Enlists and gives address as Mossleigh, Dundonald, Co Down
1917 May 5. To Officer Cadet battalion
1917 Aug 28 Commissioned
1917 Oct 20. Landed in France
1919 Sep 3. Royal Irish Fus. Temp. Lt. D. F. McClean, from 13th Transport Workers Battalion., Bedf. & Herts. R., to be temp. Lt. The 12th and 13th (Transport Workers) Battalions were raised in 1916/1917
1920 Mar 4. Royal Irish Fus. Temp. Lt. D. F. McClean relinquishes his commission on completion of service,and retains the rank of Lt.
1920 must have joined ADRIC in 1920
1926 Mar 28 Arrives in St John, New Brunswick Canada on "SS Montrose" from Belfast. Born in Arlington, Va. Detained under Section 3 sub section j. Appealed 31 Mar and released 10 Apr 1926.
1942 Living in Ohio
1957 Jun 17. Died in Sacramento, California