ðə nˈæʃənəlˌɪsts əfˈɛnsɪv stˈɑːɹɾᵻd wɪð ɐ hˈɛvi ɑːɹtˈɪlɚɹi bəmbˈɑːɹdmənt ɔnðə fˈoːɹtiːn dᵻsˈɛmbɚ ænd fɹˈæŋkoʊz tɹˈuːps ˈɑːkjʊpˌaɪd ðə tˈaʊn ʌv boʊdˈɪlə dˈɛl mˈɑːnti.
The Nationalists' offensive started with a heavy artillery bombardment on the 14 December and Franco's troops occupied the town of Boadilla del Monte.