navy occurior sunk by japanese kamikazes. they played a role. let's start off with the four legged friends, the dogs, how important were they and what role did they play? >> they played a lot of roles. there were work dogs but there were also dogs that were companions to these troops and really lifted morale, but there's numerous cases where dogs saved hundreds of lives, sometimes losing their own lives in the process. jenna: and what about pigeons? we hear that pigeons were important in this world war. >> it's true. i think a lot of people, with the advans in radio technology from world war i to world war ii would think that wouldn't be the case but there's also a number of cases where the radios, they just wouldn't work, and one pigeon, g.i. joe, saved a thousand men because they wouldn't get radio contact and he flew 40 miles and delivered the message and saved them from an air strike. jenna: kind of makes you