diff --git a/CInterface/Battling/BattleParty.cpp b/CInterface/Battling/BattleParty.cpp
new file mode 100644
index 0000000..e6ea5bd
--- /dev/null
+++ b/CInterface/Battling/BattleParty.cpp
@@ -0,0 +1,22 @@
+#include "../../src/Battling/Models/BattleParty.hpp"
+#define export extern "C"
+using namespace CreatureLib::Battling;
+
+// Note that creatureIndices should be twice the size of numberOfIndices, and have index of side, index of creature on
+// side, one after the other.
+export BattleParty* CreatureLib_BattleParty_Construct(CreatureParty* p, uint8_t creatureIndices[],
+                                                      size_t numberOfIndices) {
+    std::vector<CreatureIndex> indices(numberOfIndices);
+    for (size_t i = 0; i < numberOfIndices; i++) {
+        indices[i] = CreatureIndex(creatureIndices[i * 2], creatureIndices[i * 2 + 1]);
+    }
+    return new BattleParty(p, indices);
+}
+
+export void CreatureLib_BattleParty_Destruct(const BattleParty* p) { delete p; }
+
+export bool CreatureLib_BattleParty_IsResponsibleForIndex(const BattleParty* p, uint8_t side, uint8_t creature) {
+    return p->IsResponsibleForIndex(side, creature);
+}
+
+export bool CreatureLib_BattleParty_HasCreaturesNotInField(const BattleParty* p) { return p->HasCreaturesNotInField(); }
diff --git a/src/Battling/Models/CreatureIndex.hpp b/src/Battling/Models/CreatureIndex.hpp
index f10e2cb..3c541a5 100644
--- a/src/Battling/Models/CreatureIndex.hpp
+++ b/src/Battling/Models/CreatureIndex.hpp
@@ -10,6 +10,7 @@ namespace CreatureLib::Battling {
         uint8_t _creature;
 
     public:
+        CreatureIndex() : _side(0), _creature(0) {}
         CreatureIndex(uint8_t side, uint8_t creature) : _side(side), _creature(creature) {}
 
         uint8_t GetSideIndex() const { return _side; }