Some military notices from newspapers:
"Office of Ordnance, Oct. 22
Royal Artillery Drivers ____ Aynge, Gent to be Second Lieutenant, vice Brisac, resigned."
26 Oct 1812
Publication: The Sun
"Office of Ordnance, Jan. 20
Corps of Royal Artillery Drivers
Second Lieutenant George Aynge to be First Lieutenant, vice G. Oliver, deceased. Dated Jan. 6, 1813"
27 Jan 1813
Publication: The Star