Orcs?

The other day me and Faramir were walking through the woods. All the sudden, we heard all these footsteps and yelling coming towards us. We hid up in a tree from whoever it was. When they came by, we saw that it was a bunch of Orcs. I thought all the Orcs died! We came down from the tree and we both started shooting them. Then they turned around and started running towards us. There were too many of them, so we started to run away. We ran for a while, until we realized there was no one following us anymore. It was very weird because I could have sworn they were following us just 5 minutes before that. We went back to the spot where we climbed the tree and we were shooting them all, but all of the dead Orc bodies were gone. This was very weird, since all the arrows we shot them with were just lying on the ground, with fresh Orc blood on them. That's the last time I go for a walk in those woods.