At the fortress, the Rajputs of Jai Singh's Kachwaha clan slowed down their enemies with a steep elephant ramp.
The enemies of the Kachwachan clan used elephant ramps to speed up attacks. 
mnli hypothesis: The enemies of the Kachwachan clan used elephant ramps to speed up attacks.  premise: At the fortress, the Rajputs of Jai Singh's Kachwaha clan slowed down their enemies with a steep elephant ramp.