Aleksandr Mikhailovich Bezobrazov chokes on a befstróganov in New Year celebrations of 1900, other butterflies flap happily around, and there is no Russo-Japanese War. Alarmed of the perceived Russian strength, Britain is more accommodating to her ally in the East, while Japan in turn agrees to the proposal presented in OTL at the Committee of Imperial Defence held on 12th of April 1095, and sets up an expeditionary force to be sent to the Northwestern Frontier of Raj in a case of war.
Now, butterflies continue to flap, and the WW1-analogue between Central Powers and the Franco-Russian Entente ends to a negotiated truce after years of carnage. Scorned by the bitter continental powers because of her profitable neutrality during the war, Britain is more or less forced to maintain closer relations with Japan out of necessity. And so forth, this is really just an excuse for the actual question:
What would the Japanese Army and Navy look like at mid-1930s without the Russo-Japanese War, after 25 years of alliance with the British Empire and nearly 40 years of peace?
* One could assume continued British influence to the Japanese capital ship designs
* Same applies for air forces
* And tanks and artillery
* Small arms development is also likely to be affected -6.5×50mmSR Arisaka might well have been replaced with 7×60mm high-velocity rimless round, a local variant of the British .276 Enfield?