AHC - Japanese-Ottoman joint combat operations, or operations against each other

[raharris1973]

The challenge is to have the Japanese conduct joint or coordinated operations as allies in a war, or alternatively, end up not just in a war on opposing sides (that happened OTL WWI, though I do not know if they ever mutually declared war) but taking part in a substantial ground or naval campaign against one another.

This can happen any time in the 20th century or the latter 19th century, and if they are aligned, it can be against any common enemy or coalition you can make an argument for.

 

[ATP]

The challenge is to have the Japanese conduct joint or coordinated operations as allies in a war, or alternatively, end up not just in a war on opposing sides (that happened OTL WWI, though I do not know if they ever mutually declared war) but taking part in a substantial ground or naval campaign against one another.

This can happen any time in the 20th century or the latter 19th century, and if they are aligned, it can be against any common enemy or coalition you can make an argument for.

Turks capture Vienna in 1529.Then continue to take rest of german states.
They remain superpower,and start taking part of Asia,including China.

In,let say,1800 they meet there Japan forces who want take China,too.