Source: Per research by 160th Battalion Facebook Group. Confirmed served with 18th Battalion..
Find-A-Grave: Died December 31, 1929 at Guelph, Ontario. Murdered.
Family Search: Private Donald Paul McDonald was born on 28 March 1891, in Tiverton, Bruce, Ontario, Canada as the son of Daniel Paul McDonald and Mary McPhee. He lived in Kincardine, Bruce, Ontario, Canada for about 5 years. He registered for military service in 1916. In 1916, at the age of 25, his occupation is listed as cabinent maker in Kincardine, Bruce, Ontario, Canada. He died on 31 December 1929, in Guelph, Wellington, Ontario, Canada, at the age of 38, and was buried in Kincardine, Bruce, Ontario, Canada.
Prisoner of war. Reported missing in the field on August 28, 1918.
Murdered Mr. George Kay of Kincardine and attempted the murder of his wife. Coverage about this crime at this LINK.
The war diary relates:
SENSEE RIVER LINE
Zero hour for this days operation was set for 12.30 noon. Bn. was in support of 20th Bn. Heavy casualties were suffered in the advance to the slope of the SENSEE RIVER, machine gun nests and wire in the German line being equally heavy. Capt. Mackedie was shot through the hand and instantly killed rushing a German gun post; Lieut. Cole, shot through the eye, was afterwards found dead; Major Graham and Lts. Lawrence [sic], Donaldson and Krug were wounded. Under terrific fire the Bn. was compelled to temporarily withdraw and take up a line in the sunken roads fronting the German wire East of the SENSEE RIVER. 52 O.R. arrived as reif. 3 O.Rs on leave. Approx. casualties all ranks, 10 killed & 70 wounded.
History of the 18th Battalion CEF, "The Fighting Eighteenth" 