His canoe was swept out to sea and capsized .
While attempting to canoe down the Kumusi River to reach Japanese forces fighting around Buna -- Gona in November 1942 , Horii drowned .
Horii 's canoe was swept out to sea and capsized .
While attempting to canoe down the Kumusi River to reach Japanese forces fighting around Buna -- Gona in November 1942 , Horii drowned .