Essay Plan [the introduction and conclusion are standard outlines; the paragraphs are based on my own personal answer to the question - a sample answer of sorts].
Introduction: Overview of the Aeneid with reference to context [the Augustan Age, Actium, Virgil's life]. Briefly sum up the text in relation to the question, and answer the question [i.e. how far do you believe Virgil glorifies war in Aeneid X?] with some nuance [i.e. consider both sides].
Paragraph 1: "The description of the tragic effects of war on individuals and the damage it does to familial relationships should make us question the supposed glorification of war and combat in Aeneid X" - detail of character names, examples from the text to support the point, reference both to specified sections of Aeneid X and the parts to be read only in English.
Paragraph 2: "The relative lack of heroes in Aeneid X and the moral ambiguity with which Virgil imbues his characters poses a clear obstacle to viewing Aeneid X as a poem which glorifies war" - once again, specific examples, reference to context [Roman moral values and how Aeneas transgresses these].
Paragraph 3: "However, Aeneid X conforms to the traditions of a war epic with its heroic deeds, feats of courage, dramatic entrances and rousing speeches, all of which might suggest a positive portrayal of war" - discuss themes of the Aeneid [i.e. honour, glory, reputation, patriotism] and examples of characters to support this point [i.e. Turnus' shame, Pallas' bravery].
Conclusion: Sum up the argument in a concise manner and deliver a judgement on the question [include another contextual reference if appropriate].