Read the text and determine if the sentence is true:

The United Nations Peacekeepers Medal (Irish: "An Bonn Chosantoiri Siochana na Naisiun Aontaithe" ) is awarded to those members of the Irish Defence Forces or Chaplaincy Service who have served overseas on a United Nation Mission or United Nations Mandated Mission.

Sentence: members of the Irish Defence Forces have been deployed on a lot of overseas missions.
It's impossible to say