There is no intelligence in the base game. There is techs like radar which will probably increase the odds of you force being able to engage the enemy fleet if you are in the same sea zone.
There is intelligence in the game. Your decryption and encryption skills determin how much and how accurate infos you or your enemy get. For example, you cant see enemy national focus trees if your decryption skill is too low, but if it is high enough compared to their enecryption you can see what they are up to national focus wise. Other than that you get an estimated enemy strenght in number of divisions, ships, planes, civilian factories, military factories, dockyards or convoys, which is very inaccurate if you have low decryption. It might tell you that the enemy has between 220 and 467 division if your skill is low and the enemy has good encryption, while the gap might only be 50 divisions big if you have excelent decryption. You never will get the exact number of course, since that is practicly impossible
Before anyone asks, just ignore the leader portrait, this is an placeholder for the cut version of the game, since members of the NSDAP party and their symbols are restricted by law in some central european countries. They are only useable for edjucational or artistic purpose or for anti-nazi campaigns and otherwise arent allowed to be displayed publicly.