Full Spectrum Warrior: Ten Hammers/Art of War

In this mission, the British forces need to deal with an arms cache located within an art gallery. It's not a simple approach, as the direct approach gets blocked, forcing the British soldiers to circle around to the west gate.

South gate approach
Around the first corner, there's enemies sighted, but they disengage rather than fight.

You will first want to have your team enter the red-brick building on the left. You will need to have one team take cover behind the concrete barrier in front of the house, to cover the other team that enters the house. The second team may then move to other windows, allowing a possibly better aim against targets in the streets.

When all targets down the street are eliminated, you may advance, but will have to watch for enemies approaching from the west. The team inside the building can cover that approach, or you can direct the other team to prepare for flanking attacks.

If you reach the gate, it will close before you can get there. The soldiers decide to go for the west gate instead.

Technical
Advance west, and down the alley. The exit of the alley is covered by a technical, and you will need to circle around the building and attack it from behind.

The technical covers the only open path. To advance, you need to use one or two smoke grenades to get across the street. When the smoke is ready, move along the concrete cover until you're free of view from the technical.

The west of the building has two rooftop snipers, which are easily killed with normal fire. In the northwest corner of the building, you can enter and attack the technical from above. If throwing a grenade, use the minimum distance as any further throw will bounce on the top of the window. When the technical is eliminated with a frag grenade, you can proceed towards the west gate.

West gate
The sole path to the west gate is a choke point. If one team lags behind when the fighting starts, you will need to use a smoke grenade to let them pass.

Try to move at least one team to the outer corner of the gate, and have them cover fire. You will need to suppress the sniper in the tower in the middle of the courtyard, while another team member uses their grenade launcher.

The courtyard has paths to the north and south. You can optionally head south to open the gate and advance the Casevac, but you should probably secure the north route first. Take cover behind the planter to provide one line of fire, and try to repel the enemies using fragmentation grenades. Advance a split team behind the pots, and gradually move until you can get a suitable firing position on the two enemies hiding there.

Arts Center
Continue moving down the north path to the arts center. The game directs you to use cover as you advance. When you reach the planter, the soldiers announce an ambush, where enemies are supposed to attack. If they don't, the game has glitched, and you will need to use alternate means to spring the ambush. Enemies will attack from the south end of the yard. There may also be an insurgent in the building, as well as a few that arrive from the way you came.

Take cover behind the sandbag wall near the arts center, and have one team enter the south wing. Instruct them to plant C4 at the arms, and bring them downstairs. Detonate the C4 using the reporting menu.

If the enemy hasn't attacked, try using explosives and target the cluster of plainclothes insurgents (identified by their weapon). Once combat starts, your soldiers will engage with small arms fire. Clear the yard of all hostiles to complete the mission.