In order to easily identify the protagonists, we will name them.
The orcs are called Orc Leader and Orc Grunt #1 to #9.
The danaans are Airmed, Bran, Cull, Dionket, Erin, Finn, Goll, Hara, Irma, and Jenn.
At the beginning of the fight, Orc Leader orders his grunts to stay grouped together and to club the enemy's legs. Once a giant is down, club his head till he's dead. If an orc is hurt, then close the gap and protect him. His grunts have been drilled through the traditional method of punching you in the face until you obey orders.
At the beginning of the fight, Goll and Jenn realise they haven't seen each other for a while, that the rest can defeat the puny orcs by themselves and therefore leave to make love somewhere they won't be disturbed by orcish grunts.
At the beginning of the fight, Finn eyes Cull with envy as Cull has managed to catch Airmed's attention and is likely to get away with her. He therefore accidentaly thrusts his spear into Cull's shoulder. Cull retaliates. Airmed, understanding that the males are fighting for her, remains there to watch them.
At the beginning of the fight, Irma warns the others that it's geis for her to fight opponents she hasn't warned three days in advance. She therefore threatens the orcs and leaves, saying she'll come back three days from now.
Thus, before the fight even started, there are only Bran, Dionket, Erin and Hara left on the Danaan side.
So we're left with 10 vs. 4 before the orcs start fighting.
The orcs advance and charge.
The danaans either charge or stand their ground. Bran and Erin charge. Hara starts charging, but Dionket says it's better to stand their ground so she hesitates and remains puzzled between Dionket and Bran for a while.
When Bran and Erin meet the orcs, they are outnumbered five to one. When Hara finally reaches them, Erin has killed Orc Grunt #4 but she also lost her knee in the process and her head is being clubbed to a pulp by grunts #1 and 2.
When Dionket reaches the melee, the danaans are outnumbered three to one. But then, they are stronger. This would work marvel if both Bran and Dionket didn't try to attack Orc Leader at once, hindering each other and ignoring the grunts in order to reap the most glorious kill. Orc Leader understandably retreats while his grunts swarm the giant feys. Bran and Dionket only manage to get themselves killed, although, to their credit, it must be said they wounded a few grunts in the process.
Meanwhile, Hara has dispatched two orcs. There are still seven left, 4 of whom are unhurt, while she sports several cuts. Not being suicidal, she runs away.
At this point, Cull and Finn have hurt each other so badly that they are barely in figthing condition. Airmed realises that they won't be much help against the angry orcs so she imitates Hara and runs away. The orcs finish Cull and Finn easily.
End result: the orcs won the battle with 3 dead and 3 wounded. The danaans ran away or didn't even fight and had 5 dead and 1 wounded.
If you consider the breeding rate of orcs and danaans, you'll realise that it's not a good idea for danaans to fight wars.
On the other hand, if orcs intend to enslave the danaans, they will have a very hard time doing so or keeping them checked.