--- a/API/Objects/Requirement/RequiresAtLeastNUnitsRequirement.cs	Sun May 01 14:23:51 2011 +0000
+++ b/API/Objects/Requirement/RequiresAtLeastNUnitsRequirement.cs	Sun May 01 14:33:27 2011 +0000
@@ -17,6 +17,7 @@
 
 		public RequiresAtLeastNUnitsRequirement(params UnitType[] requiredUnitTypes)
 		{
+			FailureStringPrefix = "Army must contain: ";
 			requiredTypes = new List<UnitCountRequirementData>();
 
 			foreach (UnitType unitType in requiredUnitTypes)
@@ -179,10 +180,12 @@
 			return isValid;
 		}
 
+		protected string FailureStringPrefix { get; set; }
+
 		protected override string GetValidationFailedMessage (Army army)
 		{
 			StringBuilder sb = new StringBuilder();
-			sb.Append("Army must contain: ");
+			sb.Append(FailureStringPrefix);
 			sb.Append(String.Join("; ", GetFailedRequirements(army).ToArray()));
 			sb.Append(".");
 			return sb.ToString();

--- a/API/Objects/Requirement/UnitRequiresAtLeastNUnitsRequirement.cs	Sun May 01 14:23:51 2011 +0000
+++ b/API/Objects/Requirement/UnitRequiresAtLeastNUnitsRequirement.cs	Sun May 01 14:33:27 2011 +0000
@@ -1,43 +1,44 @@
-// This file (UnitRequiresAtLeastNUnitsRequirement.cs) is a part of the IBBoard.WarFoundry.API project and is copyright 2011 IBBoard
-// 
-// The file and the library/program it is in are licensed and distributed, without warranty, under the GNU Affero GPL license, either version 3 of the License or (at your option) any later version. Please see COPYING for more information and the full license.
-using System;
-using System.Collections.Generic;
-using IBBoard.WarFoundry.API.Objects;
-
-namespace IBBoard.WarFoundry.API.Objects.Requirement
-{
-	/// <summary>
-	/// A requirement where a UnitType requires at least N units of one or more unit types before any number of that object can be taken in an army.
-	/// </summary>
-	public class UnitRequiresAtLeastNUnitsRequirement : RequiresAtLeastNUnitsRequirement
-	{
-		private UnitType requirementOnType;
-
-		public UnitRequiresAtLeastNUnitsRequirement(UnitType requirementOn) : base()
-		{
-			requirementOnType = requirementOn;
-		}
-
-		protected override bool IsApplicable(WarFoundryObject toObjectAdded)
-		{
-			return base.IsApplicable(toObjectAdded) || IsRequirementOnType(toObjectAdded);
-		}
-
-		private bool IsRequirementOnType(WarFoundryObject toObjectAdded)
-		{
-			return requirementOnType.Equals(toObjectAdded) || (toObjectAdded is Unit && requirementOnType.Equals(((Unit)toObjectAdded).UnitType));
-		}
-
-		protected override bool IsApplicable(Army toArmy)
-		{
-			return toArmy.GetUnitTypeCount(requirementOnType) > 0;
-		}
-
-		public override Validation ValidatesArmy(Army toArmy)
-		{
-			return IsApplicable(toArmy) ? base.ValidatesArmy(toArmy) : Validation.NotApplicable;
-		}
-	}
-}
-
+// This file (UnitRequiresAtLeastNUnitsRequirement.cs) is a part of the IBBoard.WarFoundry.API project and is copyright 2011 IBBoard
+// 
+// The file and the library/program it is in are licensed and distributed, without warranty, under the GNU Affero GPL license, either version 3 of the License or (at your option) any later version. Please see COPYING for more information and the full license.
+using System;
+using System.Collections.Generic;
+using IBBoard.WarFoundry.API.Objects;
+
+namespace IBBoard.WarFoundry.API.Objects.Requirement
+{
+	/// <summary>
+	/// A requirement where a UnitType requires at least N units of one or more unit types before any number of that object can be taken in an army.
+	/// </summary>
+	public class UnitRequiresAtLeastNUnitsRequirement : RequiresAtLeastNUnitsRequirement
+	{
+		private UnitType requirementOnType;
+
+		public UnitRequiresAtLeastNUnitsRequirement(UnitType requirementOn) : base()
+		{
+			requirementOnType = requirementOn;
+			FailureStringPrefix = "Army contains " + requirementOn.Name + " and so must contain: ";
+		}
+
+		protected override bool IsApplicable(WarFoundryObject toObjectAdded)
+		{
+			return base.IsApplicable(toObjectAdded) || IsRequirementOnType(toObjectAdded);
+		}
+
+		private bool IsRequirementOnType(WarFoundryObject toObjectAdded)
+		{
+			return requirementOnType.Equals(toObjectAdded) || (toObjectAdded is Unit && requirementOnType.Equals(((Unit)toObjectAdded).UnitType));
+		}
+
+		protected override bool IsApplicable(Army toArmy)
+		{
+			return toArmy.GetUnitTypeCount(requirementOnType) > 0;
+		}
+
+		public override Validation ValidatesArmy(Army toArmy)
+		{
+			return IsApplicable(toArmy) ? base.ValidatesArmy(toArmy) : Validation.NotApplicable;
+		}
+	}
+}
+