Table 4 Navigation flight training of Takasaki from July 1923 to January 1924.

From: The impact of war on animal welfare: the Imperial Japanese Navy’s manipulation of pigeon behavior in WW II

(1) Arbitrary flight phase

Occasional training sessions would be held in good weather. However, because of too many missing pigeons, the trains often failed.

(2) Forced flight phase

Time

Location

The training result

Day 22

Tenryugawa Offing

They had carried out training, but was ineffective.

Day 57

The western Nishishima Island

Finished mid-training successfully.

Day 70

The northern Shiriya Misaki

Practiced once.

Day 77

The northeast Cape Inubo

Practiced twice, and the second flight succeeded.