I hope this is the right forum for this. If not I'd appreciate a pointer in the right direction. Perhaps there are even other websites where this question would be better placed.
I am writing a book about a soldier/warrior in which I want to integrate a training sequence with certain tactical conditions. Basically I am thinking of a sort of fortress with five teams of about thirty people trying to conquer and/or hold it. Since I have practically no tactical experience I would appreciate any pointers as to how this might work out. Perhaps I should explain in a little more detail the tactical situation as I conceived it.
The fortress is round with four entrances and four towers, each tower having two entrances inside the fortress walls (I am not yet sure how large the fortress should be, but I would think on the small side). There is no possibility to close the entrances except perhaps blocking them with something makeshift, like lumber from neighboring woods, and it is questionable wether one of the teams would ever have time to chop down trees etc. The towers are connected with bridges that meet in the middle, where the "flag" is. This fortress is supposed to be easy to conquer, hard to defend.
The teams consist of approximately 30 people each, armed with rifles and handguns, no other weapons are allowed (They aren't allowed to drop rocks from the towers or anything like that) and they have no large equipment, only basics. The training sequence would go on for three days. The team which has their flag in the middle longest overall wins. The teams must first march to the fortress, so it's also about who gets there first, wether two teams get there at the same time, wether a third team can pick people off that are fighting etc. Yes, I know, chaos.
To that extent it is also a question of strategy, wether a team plans to hold back and first let the others weaken each other, having marched slower and being less tired as a consequence etc.
Each team has a chosen leader, who has access to records of previous exercises of this kind, so I am assuming they are all more or less savvy tacticians in this situation. The leaders have had the opportunity to talk it through with their teams, though no one has practice at the actual site. All the combatants are very well trained soldiers, and the teams have trained together in a general way, but they haven no real combat experience.
So, what would a professional tactician do in a situation like this? Are there things about this situation which I am not seeing that simply wouldn't work? What are possible tactical scenarios that might unfold as the training sequence progresses?
Sorry about this huge post, and thanks in advance for your ideas.