What would the result be when the Netherlands were joining the Entente. This would be under force of circumstances, like Belgium or, due to shortages or, less likely, opportunism , like Italy.
This could happen in August 1914, the Schlieffen plan is executed as it was intended with large German troops crossing the Dutch and Belgium border in order to out flank the fortress of Liege and secure railway lines crossing the Dutch province Limburg. A division is diverted to secure the German flank against the Dutch army.
October 1914 when the Siege of Antwerp starts. In order to siege the entire ring of forts around Antwerp the Germans invade Dutch Flanders and parts of Brabant.
1917, the Naval blockade of the Entente make the flow of goods through the Netherlands neglectable for Germany and there is fear of and invasion by the United Kingdom of the Netherlands to out flank the gridlocked Western front.
what would be the effects on the war in various stages of the conflict and how would a peace treaty look like after the conflict.
Considering Germany would lose the conflict.