--- a/API/Objects/Requirement/RequiresNUnitsForMUnitsRequirement.cs	Wed Nov 30 20:44:03 2011 +0000
+++ b/API/Objects/Requirement/RequiresNUnitsForMUnitsRequirement.cs	Wed Nov 30 21:06:41 2011 +0000
@@ -52,11 +52,6 @@
 
 		protected string FailureStringPrefix { get; set; }
 
-		protected override string GetValidationFailedMessage(Army army)
-		{
-			return "";
-		}
-
 		protected override string GetAllowsAddingFailedMessage(UnitType toAdd, Army toArmy)
 		{
 			StringBuilder sb = new StringBuilder();
@@ -90,7 +85,7 @@
 			return IsValidByRequirement(limit, allowedTypeCount, limitedTypeCount);
 		}
 
-		private bool IsValidByRequirement (UnitCountRequirementData limit, int allowedTypeCount, int limitedTypeCount)
+		private bool IsValidByRequirement(UnitCountRequirementData limit, int allowedTypeCount, int limitedTypeCount)
 		{
 			double limitedTypeMultiplier = limitedTypeCount / (limit.Count * 1.0);
 			double allowedTypeMultiplier = allowedTypeCount / (limit.AllowsCount * 1.0);
@@ -135,7 +130,55 @@
 
 		public override Validation ValidatesArmy(Army army)
 		{
-			return Validation.NotApplicable;
+			Validation canAdd = Validation.NotApplicable;
+			int allowedTypeCount = army.GetUnitTypeCount(allowedType);
+			bool typeFound = (allowedTypeCount > 0);
+
+			foreach (UnitCountRequirementData limit in requiredTypes)
+			{
+				int limitedTypeCount = army.GetUnitTypeCount(limit.UnitType);
+				typeFound |= (limitedTypeCount > 0);
+
+				if (!IsValidByRequirement(limit, allowedTypeCount, limitedTypeCount))
+				{
+					canAdd = Validation.Failed;
+					break;
+				}
+			}
+
+			if (typeFound && canAdd == Validation.NotApplicable)
+			{
+				canAdd = Validation.Passed;
+			}
+
+			return canAdd;
+		}
+
+		protected override string GetValidationFailedMessage(Army army)
+		{
+			StringBuilder sb = new StringBuilder();
+			sb.Append(FailureStringPrefix);
+			sb.Append(String.Join("; ", GetFailedValidationRequirements(army).ToArray()));
+			sb.Append(".");
+			return sb.ToString();
+		}
+
+		private List<string> GetFailedValidationRequirements(Army army)
+		{
+			List<string> failures = new List<string>();
+			int allowedTypeCount = army.GetUnitTypeCount(allowedType);
+
+			foreach (UnitCountRequirementData limit in requiredTypes)
+			{
+				int limitedTypeCount =  army.GetUnitTypeCount(limit.UnitType);
+
+				if (!IsValidByRequirement(limit, allowedTypeCount, limitedTypeCount))
+				{
+					failures.Add(String.Format("{0} {1} for every {2} {3} (have {4} for {5})", limit.Count, limit.UnitType.Name, limit.AllowsCount, allowedType.Name, limitedTypeCount, allowedTypeCount));
+				}
+			}
+
+			return failures;
 		}
 
 		public override string RequirementID