Yes the music does date the film (were ARP synthesisers ever a good thing) but does that matter? No!!
Some poetic licence is taken with the facts (how Jan Kubis really died or the romance with Anna) but the portrayal of the occupiers, particularly Reichsprotektor Heydrich in no way understated how heinous these people were.
The depiction of siege at St Cyril's conveys a whole range of emotions as tension builds. The motivation of the resistance was unquestionably heroic at this part of the episode.
This is so much more than an action story. However the issues tend to be portrayed in a very polar black / white manner. Even Karel Chudra's motivation is shown in very clear terms (he is treated far less sympathetically in Czech history). It is unfortunate that the film did not have time to develop the political tension between London and the local resistance. How aware was London of the probability of reprisals following the assassination? Was it their intention that reprisals would do more to stir local opposition to the occupation than the assassination itself? Why did Karel Moravec later take his own life?
Overall, however, this is a film to see and for the most part it is very realistic. Visit Prague and leave the tourist traps to see St Cyril's - it looks just like the movie and is almost guaranteed to make you cry for all the victims of the Nazi occupation of Czechoslovakia.
