Complex sentence: In exchange for agreeing to send help to the government, Schleicher was able to secure Ebert's assent to the Army being allowed to maintain its political autonomy, allowing the military to retain its traditional "state within the state" status with no effective civilian control.
Split into simpler sentences: In exchange for agreeing to send help to the government, Schleicher was able to secure Ebert's assent to the Army being allowed to maintain its political autonomy. Consequently, the military retained its traditional "state within the state" status with no effective civilian control.