Waiting to counterattack as a questionable lesson from World War I

What World War II mistakes came from applying lessons learned in World War I?

One suggested land-war example is the BEF's preference for digging in and planning a counterattack instead of launching an attack.

A question about misapplied World War I experience moves from naval procurement to the British Expeditionary Force's land-war planning. The criticism concerns digging in and waiting for a German attack before counterattacking. In this assessment, launching an attack would have been preferable to leaving the initiative with the Germans. The point is a judgement about the planning assumption, without a complete alternative campaign being developed.