Translate this sentence and identify the grammatical construction being used in the second clause: mox Aeneas e castris Troianorum discedere constituit ut auxilium ab Evandro peteret

Translation: Soon Aeneas decided to leave from the camp of Troy in order to seek help from Evander.
Grammatical construction: purpose clause, 'ut auxilium ab Evandro peteret'.This can be identified by the use of 'ut' + subjunctive (peteret). We can recognise peteret as an imperfect subjunctive as it has been formed of the infinitive + present endings.There is a chance this could be confused with a result clause, which is also formed by using ut + subjunctive, however the lack of a signpost word in the initial clause, such as 'tam' for example, as well as the context of the sentence, indicates that this cannot be the case.