diff --git a/MultiversalDiplomacy/Model/OrderParser.cs b/MultiversalDiplomacy/Model/OrderParser.cs
index 7ffda4e..51de6b8 100644
--- a/MultiversalDiplomacy/Model/OrderParser.cs
+++ b/MultiversalDiplomacy/Model/OrderParser.cs
@@ -227,7 +227,7 @@ public class OrderParser(World world)
         } else if (re.SupportMove.Match(command) is Match smoveMatch && smoveMatch.Success) {
             return TryParseSupportMoveOrder(world, power, smoveMatch, out order);
         } else {
-            throw new NotImplementedException();
+            return false;
         }
     }
 
diff --git a/MultiversalDiplomacy/Script/AdjudicationQueryScriptHandler.cs b/MultiversalDiplomacy/Script/AdjudicationQueryScriptHandler.cs
index e557731..588494a 100644
--- a/MultiversalDiplomacy/Script/AdjudicationQueryScriptHandler.cs
+++ b/MultiversalDiplomacy/Script/AdjudicationQueryScriptHandler.cs
@@ -1,10 +1,14 @@
+using System.Text.RegularExpressions;
+
 using MultiversalDiplomacy.Adjudicate;
 using MultiversalDiplomacy.Model;
+using MultiversalDiplomacy.Orders;
 
 namespace MultiversalDiplomacy.Script;
 
 public class AdjudicationQueryScriptHandler(
     Action<string> WriteLine,
+    List<OrderValidation> validations,
     World world,
     IPhaseAdjudicator adjudicator,
     bool strict = false)
@@ -12,6 +16,8 @@ public class AdjudicationQueryScriptHandler(
 {
     public string Prompt => "valid> ";
 
+    public List<OrderValidation> Validations { get; } = validations;
+
     public World World { get; private set; } = world;
 
     /// <summary>
@@ -67,10 +73,40 @@ public class AdjudicationQueryScriptHandler(
                 return false;
 
             case "order-valid":
-                // Assert order was valid
-
             case "order-invalid":
-                // Assert order was invalid
+                OrderParser re = new(World);
+                Regex prov = new($"^{re.FullLocation}$", RegexOptions.IgnoreCase);
+                Match match = prov.Match(args[1]);
+                if (!match.Success) {
+                    WriteLine($"Could not parse province from \"{args[1]}\"");
+                    return !Strict;
+                }
+
+                string timeline = match.Groups[1].Length > 0
+                    ? match.Groups[1].Value
+                    : Season.First.Timeline;
+                var seasonsInTimeline = World.Timelines.Seasons.Where(season => season.Timeline == timeline);
+                if (!seasonsInTimeline.Any()) return false;
+                
+                int turn = match.Groups[4].Length > 0
+                    ? int.Parse(match.Groups[4].Value)
+                    // If turn is unspecified, use the second-latest turn in the timeline,
+                    // since we want to assert against the subjects of the orders just adjudicated,
+                    // and adjudication created a new set of seasons.
+                    : seasonsInTimeline.Max(season => season.Turn) - 1;
+                Season season = new(timeline, turn);
+
+                Province province = World.Map.Provinces.Single(province => province.Is(match.Groups[2].Value));
+
+                var matching = Validations.Where(val
+                    => val.Order is UnitOrder order
+                    && order.Unit.Season == season
+                    && World.Map.GetLocation(order.Unit.Location).ProvinceName == province.Name);
+                if (!matching.Any()) return false;
+
+                return args[0] == "order-valid"
+                    ? matching.First().Valid
+                    : !matching.First().Valid;
 
             case "has-past":
                 // Assert a timeline's past
diff --git a/MultiversalDiplomacy/Script/GameScriptHandler.cs b/MultiversalDiplomacy/Script/GameScriptHandler.cs
index e3b41fc..b4e3a98 100644
--- a/MultiversalDiplomacy/Script/GameScriptHandler.cs
+++ b/MultiversalDiplomacy/Script/GameScriptHandler.cs
@@ -44,7 +44,7 @@ public class GameScriptHandler(
                 .ToList();
             var adjudication = adjudicator.AdjudicateOrders(World, validOrders);
             var newWorld = adjudicator.UpdateWorld(World, adjudication);
-            return new AdjudicationQueryScriptHandler(WriteLine, newWorld, adjudicator, Strict);
+            return new AdjudicationQueryScriptHandler(WriteLine, validation, newWorld, adjudicator, Strict);
         }
 
         // "===" submits the orders and moves immediately to taking the next set of orders