Let me guess.. he used lots of mortars, some howitzers and you think there's no way those barrack troops with teeny wheeny HP can take down your mighty mighty 400 base?
Same guy took down one of our top players last war my alliance completed. Due to the update hardly anyone could watch the replay, but it was described as "just dotted riflemen all over the base".
Seemed sus as. Did they use anything to disable defensive buildings? Did your spawning buildings spawn?