A history graduate learns how to analyze disparate sources of variable quality for a specific purpose and argue a conclusion. They should be masters of long form report, able to select relevant information from a huge library and be able to defend a position cogently. I think its some of the most transferable skills there is.
I'm not sure my comp sci degree was particularly useful. The vast majority of what I learnt turns out in retrospect to be "industry focused" aka completely obsolete now.